Withoutthe work of Per-Ingvar Brånemark, the world might still be awaiting the adventof titanium implants. His observation, in the mid-twentieth century, that thehuman body would not only tolerate titanium, but also integrate it into livingbone tissue (under carefully controlled conditions) revolutionized the fieldsof dental, maxillofacial and orthopedic rehabilitation.
来源：新华网山东频道作者：新华社记者 吴增祥 摄网址：http://www.sd.xinhuanet.com/news/2004-09/21/content_2906539.htm “种牙”成为新时尚
